Combing three-dimensional yarn laying device applicable to large-needle back needle shifting

Abstract

This application relates to a guide bar three-dimensional yarn laying device suitable for large needle back needle movement, and belongs to the field of textile machinery. It includes a guide bar frame, a guide needle mechanism, a guide bar space positioning shaft, a set of X-axis movement mechanisms and two sets of Y-axis movement mechanisms. The guide needle mechanism is installed at the bottom of the guide bar frame, and the guide bar space positioning shaft is installed at the top of the guide bar frame; the X-axis movement mechanism is located on one side of the guide bar frame and is used to drive the guide bar frame to move in the first direction along the horizontal plane; the two sets of Y-axis movement mechanisms are respectively located on one side of both ends of the guide bar space positioning shaft and are used to drive the guide bar frame to move in the second direction along the horizontal plane; the device also includes a Z-direction controller mounting frame, and the Z-direction controller mounting frame is located above the guide bar space positioning shaft; Z-axis movement mechanisms are installed at both ends of the Z-direction controller mounting frame and are used to drive the guide bar frame to move in the third direction. It solves the problem of difficult yarn laying during large needle back needle movement in the prior art.

Description

Technical Field

[0001] This application relates to the technical field of textile machinery, and particularly relates to a comb three-dimensional yarn laying device suitable for large needle back needle shifting. Background Art

[0002] The yarn laying motion is an important part of the knitting process of warp knitting machines, and the change of fabric structure is realized through the yarn laying motion. During the yarn laying process of warp knitting machines, the comb performs left and right horizontal shifting motions and front and back swinging motions in front of and behind the needles to achieve the mutual nesting of coils, and then a warp knitted fabric is formed.

[0003] From the analysis of the mechanical structure, the horizontal shifting area in front of the needles is the range where the comb swings from the plane out of the knitting needles towards the back of the machine and swings from the plane into the knitting needles towards the front of the machine; the horizontal shifting area behind the needles is the range where the comb swings from the plane out of the knitting needles towards the front of the machine and swings from the plane into the knitting needles towards the back of the machine. This two-dimensional motion of the comb, including left and right horizontal shifting and front and back swinging, can meet the production requirements when knitting ordinary fabrics. However, during the large needle back needle shifting process, due to the height difference between the starting point of the yarn and the position of the guide yarn needle of the comb, the yarn guided by the guide yarn needle of the comb is inclined at a certain angle with respect to the horizontal plane of the needle bed; during the yarn laying process, since the inclination angle remains unchanged, the position of the yarn laying point is proportional to the number of needle back shifts, that is, the larger the number of shifts, the higher the yarn laying point. When the height of the yarn laying point reaches a certain level, a yarn laying failure phenomenon will occur, resulting in the inability of the warp knitting machine to knit into a fabric.

[0004] In recent years, with the popular application of warp knitted sunshade nets for agriculture, the demand for sunshade nets with good sunshade effect and light weight is increasing continuously. Through the analysis of warp knitted sunshade net fabrics, the large needle back needle shifting process can achieve a light and dense sunshade effect, while also reducing the raw material consumption and production cost.

[0005] Therefore, in order to meet the market demand and improve the production profit rate, it is required that the warp knitting yarn laying needle shifting distance be as large as possible. At present, in order to increase the yarn laying needle shifting distance and maintain the stability of yarn laying, warp knitting machines on the market can only significantly reduce the machine speed, which in turn reduces the production efficiency, and the maximum needle shifting distance can only reach 30 cm. Beyond this needle shifting distance, normal knitting cannot be carried out, and the market has an urgent demand for sunshade nets with a larger needle shifting distance (50 cm). Summary of the Invention

[0006] The purpose of this application is to provide a comb three-dimensional yarn laying device suitable for large needle back needle shifting to solve the problem of difficult yarn laying during large needle back needle shifting in the above-mentioned existing technology.

[0007] To achieve the above purpose, the technical solution adopted in this application is as follows:

[0008] A comb three-dimensional yarn laying device applicable to large needle back needle shifting, comprising a comb frame, a yarn guide needle mechanism, a comb spatial positioning shaft, a set of X-axis movement mechanisms and two sets of Y-axis movement mechanisms. The yarn guide needle mechanism is installed at the bottom of the comb frame, and the comb spatial positioning shaft is installed at the top of the comb frame. The X-axis movement mechanism is located on one side of the comb frame and is used to drive the comb frame to move in the first direction on the horizontal plane. The two sets of Y-axis movement mechanisms are respectively located on one side at both ends of the comb spatial positioning shaft and are used to drive the comb frame to move in the second direction on the horizontal plane. The first direction on the horizontal plane is perpendicular to the second direction on the horizontal plane. The comb three-dimensional yarn laying device applicable to large needle back needle shifting further includes a Z-direction controller mounting frame, and the Z-direction controller mounting frame is located above the comb spatial positioning shaft. Z-axis movement mechanisms are installed at both ends of the Z-direction controller mounting frame and are used to drive the comb frame to move in the third direction, and the third direction is perpendicular to the horizontal plane.

[0009] In a possible implementation manner, both ends and the middle of the comb spatial positioning shaft are installed on the top of the comb frame through mounting blocks.

[0010] In a possible implementation manner, the X-axis movement mechanism includes an X-axis moving seat, an X-axis electric cylinder, an X-axis pull rod, an X-axis transmission rod and an X-axis transmission shaft. The X-axis electric cylinder is installed on the frame of the warp knitting machine, the X-axis moving seat is fixedly sleeved on the telescopic end of the X-axis electric cylinder, and the X-axis pull rod is installed on the side of the X-axis moving seat close to the comb frame. One end of the X-axis transmission rod is connected to one side of the comb frame, and the other end is in hooked transmission with the X-axis pull rod. One end of the X-axis transmission shaft is connected to one side of the comb frame, and the other end is telescopically connected to the telescopic end of the X-axis electric cylinder, wherein the other end of the X-axis transmission shaft is movably sleeved on the outer periphery of the telescopic end of the X-axis electric cylinder.

[0011] In a possible implementation manner, the Y-axis movement mechanism includes a Y-axis moving seat, a Y-axis electric cylinder, a Y-axis pull rod, a Y-axis transmission rod, a Y-axis transmission shaft and an L-shaped block. The Y-axis electric cylinder is installed on the frame of the warp knitting machine, the Y-axis moving seat is fixedly sleeved on the telescopic end of the Y-axis electric cylinder, and the Y-axis pull rod is installed on the side of the Y-axis moving seat close to the comb spatial positioning shaft. The L-shaped block is installed on one side of the end of the comb spatial positioning shaft. One end of the Y-axis transmission rod is connected to the L-shaped block, and the other end is in hooked transmission with the Y-axis pull rod. One end of the Y-axis transmission shaft is connected to the L-shaped block, and the other end is telescopically connected to the telescopic end of the Y-axis electric cylinder, wherein the other end of the Y-axis transmission shaft is movably sleeved on the outer periphery of the telescopic end of the Y-axis electric cylinder.

[0012] In a possible implementation, the Z-axis motion mechanism includes a Z-axis moving seat, a Z-axis electric cylinder, a Z-axis pull rod, a Z-axis transmission rod, a Z-axis transmission shaft, a first adapter block, and a second adapter block; the Z-axis electric cylinder is installed on the frame of the warp knitting machine, the Z-axis moving seat is fixedly sleeved on both the Z-direction controller mounting bracket and the telescopic end of the Z-axis electric cylinder, and the Z-axis pull rod is installed on one side of the Z-axis moving seat close to the comb space positioning shaft; the second adapter block is fixedly sleeved on the comb space positioning shaft, the first adapter block is connected above the second adapter block through a transfer shaft, one end of the Z-axis transmission rod is connected to the first adapter block, and the other end is in hook transmission with the Z-axis pull rod; one end of the Z-axis transmission shaft is connected to the first adapter block, and the other end is telescopically connected to the telescopic end of the Z-axis electric cylinder, wherein the other end of the Z-axis transmission shaft is movably sleeved on the outer periphery of the telescopic end of the Z-axis electric cylinder.

[0013] The beneficial effects brought by the technical solution provided by this application at least include:

[0014] To address the problem of yarn laying during the back needle movement of any large needle, based on the existing yarn laying method of the comb moving left and right horizontally and swinging back and forth, this application designs a three-dimensional yarn pressing mechanism for the comb, that is, through the setting of the Z-axis motion mechanism, the angle between the yarn and the needle bed horizontal plane during the back needle movement of the large needle is reduced, so that the position of the yarn laying point during the back needle movement of the large needle is lowered, and the yarn laying point can be flexibly adjusted, solving the technical problems of difficult loop formation and uneven fabric quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of this application, and constitute a part of the specification. They are used together with the embodiments of this application to explain this application, and do not constitute a limitation to this application. In the drawings:

[0016] Figure 1 shows a schematic structural diagram of a three-dimensional yarn laying device for a comb applicable to the back needle movement of a large needle provided by an exemplary embodiment of this application;

[0017] Figure 2 shows a schematic structural diagram of the three-dimensional yarn laying device for a comb applicable to the back needle movement of a large needle provided by an exemplary embodiment of this application after hiding the yarn guiding needle mechanism;

[0018] Figure 3 shows Figure 2 a partial enlarged structural diagram of part A in;

[0019] Figure 4 shows Figure 2 a partial enlarged structural diagram of part B in;

[0020] Figure 5Shows the three-dimensional yarn laying diagram of the comb three-dimensional yarn laying device applicable to large needle back needle movement applied to the GB1 comb of the Terrycot machine type;

[0021] Figure 6 Shows the comparison diagram of the yarn laying effects between the comb three-dimensional yarn laying device applicable to large needle back needle movement provided by an exemplary embodiment of the present application and the two-dimensional yarn laying device;

[0022] In the figure:

[0023] 1. Comb frame; 2. Yarn guide needle mechanism; 3. Comb space positioning shaft; 4. X-axis movement mechanism; 5. Y-axis movement mechanism; 6. Z-direction controller mounting bracket; 7. Z-axis movement mechanism;

[0024] 31. Mounting block;

[0025] 41. X-axis moving seat; 42. X-axis electric cylinder; 43. X-axis pull rod; 44. X-axis transmission rod; 45. X-axis transmission shaft;

[0026] 51. Y-axis moving seat; 52. Y-axis electric cylinder; 53. Y-axis pull rod; 54. Y-axis transmission rod; 55. Y-axis transmission shaft; 56. L-shaped block;

[0027] 71. Z-axis moving seat; 72. Z-axis electric cylinder; 73. Z-axis pull rod; 74. Z-axis transmission rod; 75. Z-axis transmission shaft; 76. First adapter block; 77. Adapter shaft; 78. Second adapter block. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0029] Among them, the same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the accompanying drawings of the present application specification, and the words "bottom surface" and "top surface", "inner" and "outer" respectively refer to facing or away from a specific component. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application specification, "a plurality" means two or more.

[0030] The present application will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] In order to solve the problems existing in the prior art, the present application provides a warp knitting machine comb three-dimensional yarn laying device applicable to large needle back needle movement. Through the analysis of the depth of the warp knitting yarn laying movement, combined with the characteristics of the process organization and the motion control technology, on the basis of the original two-dimensional yarn laying movement, the mechanical structure of the comb is designed. When the comb performs large needle back needle movement, the motion control technology is used to send instructions to the servo drive device to drive the comb to move up and down, realizing the three-dimensional movement of the comb yarn laying and completing the knitting of the large needle back needle fabric required by the market. Specifically, aiming at the yarn laying problem during any large needle back needle movement, based on the existing yarn laying method of the comb moving left and right and swinging back and forth, a three-dimensional yarn pressing mechanism of the comb is designed to reduce the angle between the yarn and the needle bed horizontal plane during large needle back needle movement, so that the position of the yarn laying point during large needle back needle movement is lowered, and the yarn laying point can be flexibly adjusted, solving the technical problems of difficult loop formation and uneven fabric quality.

[0032] Figure 1 FIG. 7 shows a schematic structural diagram of a comb three-dimensional yarn laying device applicable to large needle back needle movement provided by an exemplary embodiment of the present application. The device includes a comb frame 1, a guide needle mechanism 2, a comb space positioning shaft 3, a set of X-axis motion mechanisms 4, and two sets of Y-axis motion mechanisms 5. The guide needle mechanism 2 is installed at the bottom of the comb frame 1. The guide needle mechanism 2 is composed of a plurality of guide needles evenly spaced. The comb space positioning shaft 3 is installed at the top of the comb frame 1; the X-axis motion mechanism 4 is located on one side of the comb frame 1 and is used to drive the comb frame 1 to move in the first direction of the horizontal plane, that is, the left-right direction. The two sets of Y-axis motion mechanisms 5 are respectively located on one side at both ends of the comb space positioning shaft 3 and are used to drive the comb frame 1 to move in the second direction of the horizontal plane, that is, the front-back direction. The first direction of the horizontal plane is perpendicular to the second direction of the horizontal plane. The device also includes a Z-direction controller mounting frame 6. The Z-direction controller mounting frame 6 is located above the comb space positioning shaft 3; Z-axis motion mechanisms 7 are installed at both ends of the Z-direction controller mounting frame 6 and are used to drive the comb frame 1 to move in the third direction, and the third direction is perpendicular to the horizontal plane, that is, the up-and-down movement in the vertical direction. Optionally, both ends of the Z-direction controller mounting frame 6 are movably connected to the frame of the warp knitting machine through bearing support frames.

[0033] In the embodiment of the present application, the movement of the comb three-dimensional yarn laying device applicable to large needle back needle movement is that the crankshaft angle collected by the electronic angle acquisition instrument installed at the main shaft of the warp knitting machine is uploaded to the upper computer. The upper computer determines the movement action of the needle bed according to the crankshaft angle of the main shaft and sends a movement instruction to the three-dimensional movement comb to complete the control of the movement direction of the comb. Among them, the X-axis motion mechanism 4 completes the yarn laying before and after the needle, the Y-axis motion mechanism 5 completes the conversion of the yarn before and after the needle, and the Z-axis motion mechanism 7 is to reduce the inclination angle between the yarn and the needle bed horizontal plane during the needle back yarn laying process and solve the problem of large needle back yarn laying.

[0034] In the embodiment of the present application, the comb three-dimensional yarn laying device applicable to large needle back needle movement can be applied to the transformation of existing warp knitting machines, improving the economic value of warp knitting machines. The movement of the comb can be arbitrarily defined according to the needle back horizontal movement amount. For example, a two-dimensional movement comb is used when producing tissues with a small needle back horizontal movement amount.

[0035] Further, please refer to Figure 2 , both ends and the middle of the comb space positioning shaft 3 are installed on the top of the comb frame 1 through the mounting block 31.

[0036] Specifically, please refer to Figure 2 , the X-axis movement mechanism 4 includes an X-axis moving seat 41, an X-axis electric cylinder 42, an X-axis pull rod 43, an X-axis transmission rod 44 and an X-axis transmission shaft 45; the X-axis electric cylinder 42 is fixedly installed on the frame of the warp knitting machine, the X-axis moving seat 41 is fixedly sleeved on the telescopic end of the X-axis electric cylinder 42, and the X-axis pull rod 43 is installed on the side of the X-axis moving seat 41 close to the comb frame 1; one end of the X-axis transmission rod 44 is connected to one side of the comb frame 1, and the other end is in hooked transmission with the X-axis pull rod 43; one end of the X-axis transmission shaft 45 is connected to one side of the comb frame 1, and the other end is telescopically connected to the telescopic end of the X-axis electric cylinder 42, wherein the other end of the X-axis transmission shaft 45 is movably sleeved on the outer periphery of the telescopic end of the X-axis electric cylinder 42.

[0037] In the embodiment of the present application, the X-axis movement mechanism 4 is controlled by the X-axis electric cylinder 42. According to the rotation angle of the main shaft of the warp knitting machine, the X-axis electric cylinder 42 is driven to work. When the X-axis electric cylinder 42 extends, the moving seat 41 moves to the right, and the telescopic end of the X-axis electric cylinder 42 enters the inside of the X-axis transmission shaft 45 until the X-axis moving seat 41 pushes the X-axis transmission shaft 45 to drive the comb frame 1 to move to the right; when the X-axis electric cylinder 42 retracts, the X-axis moving seat 41 moves to the left, and the telescopic end of the X-axis electric cylinder 42 slowly moves out of the inside of the X-axis transmission shaft 45 until the X-axis pull rod 43 on the X-axis moving seat 41 pulls the X-axis transmission rod 44 to drive the comb frame 1 to move to the left, finally completing the X-direction horizontal movement of the comb frame 1.

[0038] More specifically, please refer to Figure 2 and Figure 3, the Y-axis motion mechanism 5 includes a Y-axis moving seat 51, a Y-axis electric cylinder 52, a Y-axis pull rod 53, a Y-axis transmission rod 54, a Y-axis transmission shaft 55, and an L-shaped block 56; the Y-axis electric cylinder 52 is fixedly installed on the frame of the warp knitting machine, the Y-axis moving seat 51 is fixedly sleeved on the telescopic end of the Y-axis electric cylinder 52, and the Y-axis pull rod 53 is installed on one side of the Y-axis moving seat 51 close to the comb space positioning shaft 3; the L-shaped block 56 is installed on one end side of the comb space positioning shaft 3, one end of the Y-axis transmission rod 54 is connected to the L-shaped block 56, and the other end is in a hooked transmission connection with the Y-axis pull rod 53; one end of the Y-axis transmission shaft 55 is connected to the L-shaped block 56, and the other end is telescopically connected to the telescopic end of the Y-axis electric cylinder 52, wherein the other end of the Y-axis transmission shaft 55 is movably sleeved on the outer periphery of the telescopic end of the Y-axis electric cylinder 52.

[0039] In the embodiment of the present application, the motion mode of the Y-axis motion mechanism 5 is the same as that of the X-axis motion mechanism 4. The motion of the Y-axis motion mechanism 5 is controlled by the Y-axis electric cylinder 52. When the Y-axis electric cylinder 52 extends, the Y-axis moving seat 51 moves backward, and the telescopic end of the Y-axis electric cylinder 52 enters the inside of the Y-axis transmission shaft 55 until the Y-axis moving seat 51 pushes the Y-axis transmission shaft 55 to drive the comb space positioning shaft 3 to move backward, and then drives the comb frame 1 to move backward; when the Y-axis electric cylinder 52 retracts, the Y-axis moving seat 51 moves forward, and the telescopic end of the Y-axis electric cylinder 52 slowly moves out of the inside of the Y-axis transmission shaft 55 until the Y-axis pull rod 53 on the Y-axis moving seat 51 pulls the Y-axis transmission rod 54 to drive the comb space positioning shaft 3 to move forward, and then drives the comb frame 1 to move forward, finally completing the Y-direction motion of the comb frame 1 and completing the switching of the yarn in front of and behind the needles.

[0040] Further, please refer to Figure 2 and Figure 4 , the Z-axis motion mechanism 7 includes a Z-axis moving seat 71, a Z-axis electric cylinder 72, a Z-axis pull rod 73, a Z-axis transmission rod 74, a Z-axis transmission shaft 75, a first adapter block 76, and a second adapter block 78; the Z-axis electric cylinder 72 is fixedly installed on the frame of the warp knitting machine, the Z-axis moving seat 71 is fixedly sleeved on both the Z-direction controller mounting bracket 6 and the telescopic end of the Z-axis electric cylinder 72 at the same time, and the Z-axis pull rod 73 is installed on one side of the Z-axis moving seat 71 close to the comb space positioning shaft 3; the second adapter block 78 is fixedly sleeved on the comb space positioning shaft 3, the first adapter block 76 is connected above the second adapter block 78 through an adapter shaft 77, one end of the Z-axis transmission rod 74 is connected to the first adapter block 76, and the other end is in a hooked transmission connection with the Z-axis pull rod 73; one end of the Z-axis transmission shaft 75 is connected to the first adapter block 76, and the other end is telescopically connected to the telescopic end of the Z-axis electric cylinder 72, wherein the other end of the Z-axis transmission shaft 75 is movably sleeved on the outer periphery of the telescopic end of the Z-axis electric cylinder 72.

[0041] In the embodiment of the present application, the Z-axis motion mechanism 7 is used to realize the up and down movement of the comb frame 1. The movement of the Z-axis motion mechanism 7 is controlled by the Z-axis electric cylinder 72. When the large needle back shifts the needle and pads the yarn, the Z-axis electric cylinder 72 is started. When the Z-axis electric cylinder 72 extends, the Z-axis moving seat 71 drives the Z-direction controller mounting bracket 6 to move downward. The telescopic end of the Z-axis electric cylinder 72 enters the interior of the Z-axis transmission shaft 75 until the Z-axis moving seat 71 pushes the Z-axis transmission shaft 75 to drive the first adapter block 76 to move downward. The first adapter block 76 drives the second adapter block 78 to move downward, and the second adapter block 78 drives the comb space positioning shaft 3 to move downward, thereby driving the comb frame 1 to move downward, reducing the inclination angle between the yarn and the needle bed horizontal plane during the needle back padding process. When the Z-axis electric cylinder 72 retracts, the Z-axis moving seat 71 drives the Z-direction controller mounting bracket 6 to move upward. The telescopic end of the Z-axis electric cylinder 72 slowly moves out of the interior of the Z-axis transmission shaft 75 until the Z-axis pull rod 73 on the Z-axis moving seat 71 pulls the Z-axis transmission rod 74 to drive the first adapter block 76 to move upward. The first adapter block 76 drives the second adapter block 78 to move upward, and the second adapter block 78 drives the comb space positioning shaft 3 to move upward, thereby driving the comb frame 1 to move upward, finally completing the Z-direction movement of the comb frame 1. Before the needle back padding ends and the needle front padding starts, the Z-axis electric cylinder 72 drives the comb frame 1 to rise along the Z-axis to the original position to complete the next padding action.

[0042] Next, the working principle of a three-dimensional comb padding device applicable to large needle back shifting needles in the embodiment of the present application will be described.

[0043] Step 1: Set the middle position of the needle bed as the starting position of its large needle back horizontal shifting and padding loop movement. The Y-axis motion mechanism 5 drives the comb frame 1 to move along the positive Y-axis direction, and the comb moves to the front of the needle.

[0044] Step 2: The X-axis motion mechanism 4 drives the comb frame 1 to move along the negative X-axis direction, and the comb completes the needle front padding.

[0045] Step 3: The Y-axis motion mechanism 5 drives the comb frame 1 to move along the negative Y-axis direction, driving the comb to move to the back of the needle.

[0046] Step 4: The Z-axis motion mechanism 7 drives the comb frame 1 to move along the negative Z-axis direction, reducing the distance between the comb and the needle bed plane.

[0047] Step 5: The X-axis motion mechanism 4 drives the comb frame 1 to move along the positive X-axis direction, completing the needle back padding.

[0048] Step 6: The Z-axis motion mechanism 7 drives the comb frame 1 to move along the positive Z-axis direction, raising the comb to the position with the specified distance from the needle bed plane as before; the Y-axis motion mechanism 5 drives the comb frame 1 to move to the middle position of the needle bed, and repeat Steps 1 to 6.

[0049] Application example:

[0050] Figure 5 It shows a three-dimensional yarn laying diagram of a comb for large needle back needle movement provided by an exemplary embodiment of the present application applied to the GB1 comb of a Terrycot machine. In the front needle yarn laying area 401, the three-dimensional yarn laying of the comb includes moving in the negative X direction, moving first in the negative Y direction and then in the positive Y direction, and not moving in the Z-axis direction; in the stop area 402, the three-dimensional yarn laying of the comb includes not moving in the X-axis direction, moving in the positive Y direction, and not moving in the Z-axis direction; in the back needle yarn laying area 403, the three-dimensional yarn laying of the comb includes moving in the positive X direction, moving first in the positive Y direction and then in the negative Y direction, and moving in the negative Z direction; in the stop area 404, the three-dimensional yarn laying of the comb includes not moving in the X-axis direction, moving in the negative Y direction, and moving in the positive Z direction.

[0051] Effect verification:

[0052] Figure 6 It shows a comparison diagram of the yarn laying effects of a comb three-dimensional yarn laying device and a two-dimensional yarn laying device provided by an exemplary embodiment of the present application for large needle back needle movement. The figure includes knitting needles 501, needle pitches 502, yarns 503, needle bed planes 504, number of back needle movements 505, yarn laying failure points 506, heights of yarn laying points 507, yarn path of the two-dimensional yarn laying structure 508, and yarn path of the three-dimensional yarn laying structure 509. When the number of back needle movements 505 of the two-dimensional yarn laying structure path 508 reaches a certain value, there will be a phenomenon of yarn laying failure 506 where the yarn laying point is higher than the position of the knitting needle; due to the addition of the Z-axis movement direction during the yarn laying process of the three-dimensional yarn laying mechanism yarn path 509, the position of the yarn laying point is reduced, and the yarn laying point can be flexibly adjusted, improving the stability of yarn laying, greatly increasing the number of back needle movements, and achieving a stable yarn laying effect for large needle back needle movement.

[0053] In summary, to solve the problem of yarn laying during any large needle back needle movement, based on the existing yarn laying method of left-right horizontal movement and front-back swing of the comb, the present application designs a three-dimensional yarn pressing mechanism for the comb, that is, by setting the Z-axis movement mechanism, the angle between the yarn and the needle bed horizontal plane during large needle back needle movement is reduced, so that the position of the yarn laying point for large needle back needle movement is lowered, and the yarn laying point can be flexibly adjusted, solving the technical problems of difficult loop formation and uneven fabric quality.

[0054] In the embodiments disclosed in the present application, terms such as "installed", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "joined" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments disclosed in the present invention can be understood according to specific circumstances.

[0055] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A comb guide three-dimensional yarn laying device applicable to large needle back needle shifting, comprising a comb guide frame, a yarn guide needle mechanism, a comb guide space positioning shaft, a set of X-axis movement mechanisms and two sets of Y-axis movement mechanisms. The yarn guide needle mechanism is installed at the bottom of the comb guide frame, and the comb guide space positioning shaft is installed at the top of the comb guide frame. The X-axis movement mechanism is located on one side of the comb guide frame and is used to drive the comb guide frame to move in the first direction on the horizontal plane. The two sets of Y-axis movement mechanisms are respectively located on one side at both ends of the comb guide space positioning shaft and are used to drive the comb guide frame to move in the second direction on the horizontal plane. The first direction on the horizontal plane is perpendicular to the second direction on the horizontal plane. Characterized in that: The comb guide three-dimensional yarn laying device applicable to large needle back needle shifting further includes a Z-direction controller mounting frame, which is located above the comb guide space positioning shaft. Z-axis movement mechanisms are installed at both ends of the Z-direction controller mounting frame and are used to drive the comb guide frame to move in the third direction, and the third direction is perpendicular to the horizontal plane. The X-axis movement mechanism includes an X-axis moving seat, an X-axis electric cylinder, an X-axis pull rod, an X-axis transmission rod and an X-axis transmission shaft. The Y-axis movement mechanism includes a Y-axis moving seat, a Y-axis electric cylinder, a Y-axis pull rod, a Y-axis transmission rod, a Y-axis transmission shaft and an L-shaped block. The Z-axis movement mechanism includes a Z-axis moving seat, a Z-axis electric cylinder, a Z-axis pull rod, a Z-axis transmission rod, a Z-axis transmission shaft, a first adapter block and a second adapter block.

2. The comb guide three-dimensional yarn laying device applicable to large needle back needle shifting according to claim 1, Characterized in that, Both ends and the middle part of the comb guide space positioning shaft are installed on the top of the comb guide frame through mounting blocks.

3. The comb guide three-dimensional yarn laying device applicable to large needle back needle shifting according to claim 1, Characterized in that, The X-axis electric cylinder is installed on the frame of the warp knitting machine. The X-axis moving seat is fixedly sleeved on the telescopic end of the X-axis electric cylinder, and the X-axis pull rod is installed on the side of the X-axis moving seat close to the comb guide frame. One end of the X-axis transmission rod is connected to one side of the comb guide frame, and the other end is in hook transmission with the X-axis pull rod. One end of the X-axis transmission shaft is connected to one side of the comb guide frame, and the other end is telescopically connected to the telescopic end of the X-axis electric cylinder, wherein the other end of the X-axis transmission shaft is movably sleeved on the outer periphery of the telescopic end of the X-axis electric cylinder.

4. The comb guide three-dimensional yarn laying device applicable to large needle back needle shifting according to claim 1, Characterized in that, The Y-axis electric cylinder is installed on the frame of the warp knitting machine. The Y-axis moving seat is fixedly sleeved on the telescopic end of the Y-axis electric cylinder, and the Y-axis pull rod is installed on the side of the Y-axis moving seat close to the comb guide space positioning shaft. The L-shaped block is installed on one side of the end of the comb guide space positioning shaft. One end of the Y-axis transmission rod is connected to the L-shaped block, and the other end is in hook transmission with the Y-axis pull rod. One end of the Y-axis transmission shaft is connected to the L-shaped block, and the other end is telescopically connected to the telescopic end of the Y-axis electric cylinder, wherein the other end of the Y-axis transmission shaft is movably sleeved on the outer periphery of the telescopic end of the Y-axis electric cylinder.

5. The comb three-dimensional yarn laying device applicable to large-needle back needle displacement according to claim 1, characterized in that the Z-axis electric cylinder is installed on the frame of the warp knitting machine, the Z-axis moving seat is fixedly sleeved on both the Z-direction controller mounting bracket and the telescopic end of the Z-axis electric cylinder at the same time, and the Z-axis pull rod is installed on one side of the Z-axis moving seat close to the comb space positioning shaft; the second adapter block is fixedly sleeved on the comb space positioning shaft, the first adapter block is connected above the second adapter block through a transfer shaft, one end of the Z-axis transmission rod is connected to the first adapter block, and the other end is in a hook transmission connection with the Z-axis pull rod; one end of the Z-axis transmission shaft is connected to the first adapter block, and the other end is telescopically connected to the telescopic end of the Z-axis electric cylinder, wherein the other end of the Z-axis transmission shaft is movably sleeved on the outer periphery of the telescopic end of the Z-axis electric cylinder.

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